William Mason Turner (born October 17, 1991) is an American professional football offensive tackle.

Turner attended Mounds View High School in Arden Hills, Minnesota.

He was an all-state lineman for the Mustangs football team, helping compile a 26–8 record, winning section titles, and advancing to state playoffs all three years during his career.

In 2012, Turner started in 15 games and was named to the all-Missouri Valley Football Conference (MVFC) first-team.

After giving up 3 sacks and 2 quarterback pressures in a game against the Tennessee Titans, Turner was released by the Dolphins, alongside Dallas Thomas.

[13] On October 17, 2017, Turner was placed on injured reserve after suffering a broken hand in Week 6 against the New York Giants.

On March 14, 2019, Turner signed a four-year, $28 million contract with the Green Bay Packers.